Modem

A modem or “modulator” gives you the ability to an internet connection over the existing phone line. A modem is not necessary for a Local Area Network but it is required for other internet connections such as DSL or dial up. Modems convert the analogue data from the phone lines into digital data so that it can be interpreted by computer systems, ADSL modems can be used on many different types of networks; they provide the necessary connectivity to the internet.